2018 Audi S4 Prestige Tfsi Quattro Tiptronic on 2040-cars

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Tom Kristensen walks through a perfect lap of Le Mans in Forza 5

One of the best ways of learning a new track, aside from driving it, is to hear someone that's intimately familiar with it give you a good walkthrough. That's just what you'll get here, as the winningest driver in 24 Hours of Le Mans history, Tom Kristensen, walks you through the Circuit de la Sarthe's high-speed, 8.5-mile strip of pavement.
Kristensen is dubbed over scenes of drivers from a Forza Motorsport 5 contest lapping the track at the wheel of an Audi R18 E-Tron Quattro, adding a bit of visual sense to the Danish drivers description of the track.
With the 2014 24 Hours of Le Mans kicking off this weekend, this is just the sort of video you'll want to watch to get you in the mood. Take a look below, and then let us know what you think in Comments.

Audi R8, Lamborghini Huracan could get twin-charged five-cylinder

Engine downsizing and forced induction are some of the biggest trends in automotive powertrains today because. They offer the chance to reduce emissions and boost fuel economy, while possibly maintaining power. The shift is already happening to performance cars with turbocharged four-cylinders finding their way into the Ford Mustang, Chevrolet Camaro, and future Porsches. Now, there are rumblings of a tiny chance for a similar change coming for the Lamborghini Huracan and Audi R8. Why the new powertrain? China. While the market there might have slowing growth, it's still a major country for auto sales. The annual taxes on cars there also happen to be based on engine displacement, and there's a 40 percent rate on those over 4.0-liters, according to Car and Driver. The obvious answer to this conundrum is to build a smaller displacement, forced induction engine for the R8 and Huracan. Car and Driver points to the new turbocharged and electrically supercharged, 2.5-liter inline five-cylinder from the recent Audi TT Clubsport Turbo concept as a possible solution. Audi's e-turbo technology runs off a 48-volt electrical system and lithium-ion battery to produce a total of 600 horsepower and 479 pound-feet of torque in the prototype. With this mill, horsepower would barely shrink compared to the R8 V10 Plus and Lambo, but it actually makes more peak torque than their 5.2-liter V10s. While this is all theoretically feasible, take the possibility with a big grain of salt for now. According to Car and Driver, Quattro GmbH's Stephan Reil says that there's no work currently underway to fit the twin-charged five-cylinder, "but it has been talked about." That means such a vehicle is likely years away, if ever. In the meantime, a diesel version of the e-turbo setup is on the way the in the SQ7. Related Video:

Get a load of Audi's TTs [w/videos + poll]

The third-generation Audi TT coupe has made its debut here at the Geneva Motor Show, showing an evolutionary design for the German automaker's fashion-forward coupe. As expected, the new TT takes plenty of inspiration from the Sport Quattro Concept that debuted in Frankfurt last year, and it draws upon cues from the model's past two generations.
After seeing it in person, the Autoblog crew on-site in Geneva is sort of torn about the new model. It's crisp and well-proportioned, but in terms of its exterior design, it also doesn't come off like a significant generational leap forward - the aesthetic distance between the original TT and the second-generation model was quite a bit larger. Of course, it's hard to reimagine a design icon, and either way we'll have to wait until we see the car on the road to make final judgments.
Audi is offering a trio of engines for the new TT, including a 2.0-liter turbodiesel powerplant that's good for 184 horsepower, 280 pound-feet of torque and an excellent 56 miles per gallon. On the gasoline front, Audi is offering two versions of its well-liked 2.0-liter TSI turbo-four. The less-powerful spec still offers up a healthy 230 hp and 272 lb-ft of torque, while the higher-output 2.0T sends 310 hp and 280 lb-ft of twist to all four wheels in the TTS coupe. Potent stuff.